Gaya APA
Rubi, L.
(1981).
Belajar berpikir logis (the art of making sense)
.
Bandung:
Indah jaya.
Gaya MLA
Rubi, Lionel.
"Belajar berpikir logis (the art of making sense)".
Bandung:
Indah jaya,
1981.
Printed Book.